An outline for the reclassification of the Chytridiales, and for a new order, the Spizellomycetales

Abstract

An outline is presented for the reclassification of the Chytridiales into two orders based on fundamental differences in zoospore ultrastructure. The new order Spizellomycetales includes species with the Phlyctochytrium–Entophlyctis type of zoospore and also Karlingia, Olpidium, and Rozella. Four new genera, Spizellomyces, Gaertneriomyces, Triparticalcar, and Kochiomyces replace the Phlyctochytrium complex. The revised Chytridiales includes species with the Rhizophydium–Chytridium–Nowakowskiella type of zoospore, as well as Synchytrium,

Temporal variation of the small eukaryotic community in two freshwater lakes: emphasis on zoosporic fungi

“…The remainder of the backbone was not strongly supported. However, distinct and recognizable monophyletic groups in the inferred phylogeny are congruent with major clades in Chytridiomycota and Neocallimastigomycota (James et al 2006a,b) that have been previously delineated, including Spizellomycetales (Barr 1980), Rhizophydiales (Letcher et al 2006), Rhizophlyctidales (Letcher et al 2008b), Cladochytriales (MozleyStandridge et al 2009), Lobulomycetales ), and Chytridiales (Vélez et al 2011). Half of the zoosporic fungal sequences obtained grouped within previously delineated orders of Chytridiomycota, (i.e.…”

Devonian Fungi: Interactions with the Green Alga Palaeonitella

“…This had prompted Barr (1980Barr ( , 1984 to utilize zoospore ultrastructure as a basis of characterizing larger taxonomic groups. Although it is possible to record probable flagella in fossil zoospores, it is doubtful that this feature will ever be routinely used to distinguish fossil fungi.…”

Fungal biodiversity in aquatic habitats

“…Since Sparrow's monograph, two new orders of the Chytridiomycetes have been named. Barr (1980) erected the Spizellomycetales, from the Chytridiales based on zoospore ultrastructural characteristics. The anaerobic chytrids that inhabit the rumens and ceca of herbivorous mammals were discovered since Sparrow and comprise the order Neocallimastigales (Li and Heath 1993;Trinci et al 1994;Ho and Barr 1995).…”